Abstract
The creep properties of a commercial, single phase aIurnina have been determined in the temperature range of 1623 to 1723 K. The stress exponent,n, in the relationship ɛ ∝ σn was determined to be 1.9 and the true activation energy was found to be 635 kJ mol−1. Normal primary stage creep transients were observed up to strains of 1%. At low stresses, steady-state conditions were not obtained due to the occurrence of concurrent grain growth. It is shown that the steady state creep results are consistent with the occurrence of an interface controlled diffusionaI creep mechanism.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. H. Heuer, R. M. Cannon andN. J. Tighe, “Ultrafine-Grain Ceramics” edited by J. J. Burke, N. L. Reed and V. Weiss (Syracuse University Press, Syracuse, New York, 1970) p. 339.
R. M. Cannon andR. L. Coble, “Deformation of Ceramic Materials”. edited by R. C. Bradt and R. E. Tressler (Plenum, New York, 1975) p. 61.
R. C. Folweiler,J. Appl. Phys. 32 (1961) 773.
G. M. Fryer andJ. P. Roberts,Proc. Brit. Ceram. Soc. 6 (1966) 225.
C. K. L. Davies andS. K. Sinha Ray, “Special Ceramics” edited by P. Popper (British Ceramic Research Association, Stoke-on-Trent, 1972) p. 193.
R. M. Cannon, W. H. Rhodes andA. H. Heur,J. Amer. Ceram. Soc. 63 (1980) 46.
Y. Ikuma andR. S. Gordon, in “Surfaces and Interfaces in Ceramic and Ceramic-Metal Systems”, edited by J. A. Pask and A. G. Evans (Plenum, New York, 1981) p. 283.
Idem, J. Amer. Ceram. Soc. 66 (1983) 139.
W. R. Cannon andT. G. Langdon,J. Mater. Sci. 18 (1983) 1.
J. A. Stavriolakis andF. H. Norton,J. Amer. Ceram. Soc. 33 (1950) 263.
G. W. Hollenberg, G. R. Terwilliger andR. S. Gordon,ibid. 54 (1971) 196.
P. Yavari andT. G. Langdon, in “Surfaces and Interfaces in Ceramic and Ceramic-Metal Systems“, edited by J. A. Pask and A. G. Evans (Plenum, New York, 1981) p. 295.
A. H. Heuer, N. J. Tighe andR. M. Cannon,J. Amer. Ceram. Soc. 63 (1980) 53.
C. Herring,J. Appl. Phys. 21 (1950) 437.
I. M. Lifshits,Soc. Phys. JETP 17 (1963) 909.
I. M. Lifshits andV. B. Shikin,Sov. Phys. Solid State 6 (1964) 1362.
C. K. L. Davies, in “Physical Metallurgy of Reactor Fuel Elements“, edited by J. E. Harris and E. C. Sykes (The Metals Society, London, 1975) p. 99.
D. H. Chung andG. Simmons,J. Appl. Phys. 39 (1968) 5316.
A. E. Paladino andW. D. Kingery,J. Chem. Phys. 37 (1962) 957.
F. R. N. Nabarro, “Report of a Conference on the Strength of Solids” (The Physical Society, London, 1948) p. 75.
J. R. Porter, W. Blumenthal andA. G. Evans,Acta Melall. 29 (1981) 1899.
R. L. Coble,J. Appl. Phys. 34 (1963) 1679.
R. S. Gordon,J. Amer. Ceram. Soc. 56 (1973) 147.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chokshi, A.H., Porter, J.R. High temperature mechanical properties of single phase alumina. J Mater Sci 21, 705–710 (1986). https://doi.org/10.1007/BF01145544
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01145544